Washing machine

ABSTRACT

A washing machine comprises a casing, a washing drum assembly arranged inside the casing and a driving device arranged on a lower part of the washing drum assembly, and further comprises a fixed structure fixedly connected with the washing drum assembly and/or the driving device and a supporting structure arranged at the bottom of a casing, wherein the fixed structure is supported on the supporting structure and configured to support the washing drum assembly and the driving device inside the casing, and the fixed structure and the supporting structure cooperate with each other, such that the supporting structure provides supporting forces in multiple directions for the fixed structure. Through setting a fixed structure and a supporting structure, use of suspension damping pieces is reduced, thereby being more beneficial for capacity expansion, and reducing shaking of a washing drum assembly.

TECHNICAL FIELD

The present disclosure belongs to the field of washing machines, and in particular relates to a washing machine.

BACKGROUND ART

A washing machine is designed to be a device which is configured to wash clothes by utilizing electricity. Generally speaking, a washing machine includes a drum configured to accommodate washing water, a rotating drum rotatably installed inside a drum, an impeller rotatably installed at the bottom of a rotating drum, and a motor and a clutch configured to enable the rotating drum and the impeller to rotate. When the rotating drum and the impeller rotate when clothes and detergent are introduced into a rotating drum, the impeller and clothes introduced into a rotating drum agitate washing water together, thereby removing stains from clothes.

In order to increase washing capacity of a washing machine, a bigger rotating drum is required, that is, height or diameter of a rotating drum needs to be increased. If a rotating drum has a bigger size, a drum to accommodate the rotating drum and a casing of an accommodation drum also need to be increased with the increase of a rotating drum. However, the position for placing a washing machine in the house of ordinary users is limited, and it is not realistic to increase capacity of a washing drum through increasing casing of a washing machine. It becomes a big problem for designers to increase capacity of a washing drum under a premise of not increasing casing of a washing machine.

At present, an inner drum of a washing machine is generally suspended through a suspension damping piece, specifically speaking, an upper end of a suspension damping piece is connected with an inner drum, a lower end is connected with an inner drum, and through such a connecting mode, the space between an inner drum and a casing is occupied, thereby influencing increase of an inner diameter of an inner drum, and being not beneficial for volume expansion of an inner drum.

In view of this, the present disclosure is hereby proposed.

SUMMARY OF THE DISCLOSURE

A technical problem to be solved in the present disclosure is to overcome shortcomings of the prior art, and provide a washing machine, wherein through setting a fixed structure and a supporting structure, a washing drum assembly and a driving device are supported inside a casing, thereby reducing use of suspension damping pieces, and being more beneficial for capacity expansion. And a fixed structure and a supporting structure cooperate with each other to provide supporting forces at multiple directions for a fixed structure, thereby reducing shaking of a washing drum assembly.

In order to solve the above technical problem, a basic conception of the technical solution adopted in the present disclosure is as follows:

A washing machine includes a casing, a washing drum assembly arranged inside the casing and a driving device arranged under the washing drum assembly, and further includes a fixed structure fixedly connected with the washing drum assembly and/or the driving device, and a supporting structure arranged at the bottom of a casing, wherein the fixed structure is supported on the supporting structure and configured to support the washing drum assembly and the driving device inside the casing, and the fixed structure and the supporting structure cooperate with each other, such that the supporting structure provides supporting forces in multiple directions for the fixed structure.

The supporting structure is provided with a supporting portion which supports the fixed structure, the fixed structure is provided with a matching portion which is in match with the supporting portion. The supporting portion and the matching portion are both provided with multiple side faces facing different directions, and when the center of gravity of the washing drum assembly shifts, the supporting portion and the matching portion cooperate with each other to provide a supporting force vertical to the side face for the fixed structure.

The supporting portion and the matching portion are both provided with a cambered surface, the cambered surface of the supporting portion and the cambered surface of the matching portion cooperate with each other, and when the center of gravity of the washing drum assembly shifts, the supporting portion provides a supporting force vertical to the cambered surface for the fixed structure.

Preferably, the cambered surfaces of the supporting portion and the matching portion are both spherical surfaces, and the spherical surface of the supporting portion and the spherical surface of the matching portion cooperate with each other.

The supporting portion is a projection/groove arranged on a supporting structure, the matching portion is a groove/projection arranged on a fixed structure and matched with the supporting portion. The surface of the projection is an outer cambered surface, an inner wall of the groove is an inner cambered surface, and the outer cambered surface of the projection is in contact and cooperation with the inner cambered surface of the groove.

Preferably, the surface of the projection is an outer spherical surface, the inner wall of the groove is an inner spherical surface, and the outer spherical surface of the projection is in match with the inner spherical surface of the groove to provide a supporting force vertical to the spherical surface for the fixed structure.

The supporting structure is provided with a supporting plate for supporting the fixed structure, the fixed structure is provided with a fixed plate which is opposite to the supporting plate, the groove/projection is respectively arranged on a supporting plate and a fixed plate, and the projection and the fixed plate or the supporting plate are molded in one body or are connected in a detachable manner.

The fixed plate is arranged above the supporting plate, the supporting plate protrudes upwards to form an outer spherical projection, and the fixed plate is concave upwards to form an inner spherical groove,

-   -   or, the fixed plate protrudes downwards to form an outer         spherical projection, and the supporting plate is concave         downwards to form an inner spherical groove.

The fixed structure is provided with an accommodation space, and the driving device is arranged in the accommodation space and is fixedly connected with the fixed structure.

The fixed structure further includes a mounting plate and a supporting piece, two ends of the supporting piece are respectively connected with the mounting plate and the fixed plate, such that the mounting plate and the fixed plate are spaced apart to form an accommodation space, and the driving device is arranged in the accommodation space and is fixed on a lower part of the mounting plate.

The supporting piece is a supporting column, an upper end of the supporting column is fixedly connected with a mounting plate, and a lower end is connected with a fixed plate, such that the mounting plate and the fixed plate are spaced apart to form an accommodation space.

Or, the supporting piece is a barrel-shaped side wall which is formed through upward extension of an edge of a fixed plate, the barrel-shaped side wall and the fixed plate enclose into a concave cavity with an upward opening, the driving device is arranged in the concave cavity, and the mounting plate is fixedly connected with an edge of the opening of the concave cavity.

The washing machine further includes a damping piece, wherein one end of the damping piece is fixedly connected with a mounting plate, and the other end is connected with a supporting structure.

Preferably, an upper end of the damping piece is fixedly connected with the mounting plate, and a lower end is fixedly connected with the supporting plate.

After the above technical solution is adopted, the present disclosure has the following beneficial effects: (1) through setting a fixed structure and a supporting structure, a washing drum assembly and a driving device are supported in a casing, thereby reducing use of suspension damping pieces, and being more beneficial for capacity expansion; and (2) the fixed structure and the supporting structure cooperate with each other, such that the supporting structure provides supporting forces in multiple directions for the fixed structure, thereby reducing shaking of a washing drum assembly.

A further detailed description will be given below on specific embodiments of the present disclosure in combination with accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

As a part of the present disclosure, accompanying drawings are used for providing a further understanding of the present disclosure, schematic embodiments and descriptions thereof of the present disclosure are used for explaining the present disclosure, rather than constituting an improper limit to the present disclosure. Obviously, accompanying drawings described below are merely some embodiments, for those skilled in the art, other drawings can be obtained based on these drawings without any creative effort. In the drawings:

FIG. 1 is a structural schematic diagram of a section of a washing machine of the present disclosure;

FIG. 2 is a schematic diagram of a partially enlarged structure of part B in FIG. 1 of the present disclosure;

FIG. 3 is a structural schematic diagram of a section of another washing machine of the present disclosure;

FIG. 4 is a schematic diagram of a partially enlarged structure of part C in FIG. 3 of the present disclosure.

Reference numerals in the figures: 100, casing 200, inner drum 201, first water drainage outlet 202, first water drainage pipe 203, water outlet 204, second water drainage outlet 205, blocking device 205-1, valve plug 205-2, electromagnetic device 300, driving device 301, motor 302, decelerating clutch device 303, output shaft 400, water collecting chamber 401, water drainage pipe 500, mounting plate 501, water retaining rib 700, damping piece 800, fixed structure 801, matching portion 802, projection 803, fixed plate 805, supporting piece 805-1, supporting column 805-2, barrel-shaped side wall 806, concave cavity 807, concave space 900, supporting structure 901, supporting portion 902, groove 903, supporting plate.

It should be noted that, these drawings and text descriptions are not aiming at limiting a conception range of the present disclosure in any form, but to describe concepts of the present disclosure for those skilled in the art with a reference to specific embodiments.

DETAILED DESCRIPTION OF THE EMBODIMENTS

In order to make the object, technical solutions and advantages of the present disclosure clearer, a clear and complete description will be given below on technical solutions in the embodiment in combination with accompanying drawings in embodiments of the present disclosure. The following embodiments are used for describing the present disclosure, rather than for limiting the scope of the present disclosure.

Embodiment 1

A washing machine includes a casing 100, a washing drum assembly arranged inside the casing 100 and a driving device 300 arranged under the washing drum assembly, and further includes a fixed structure 800 fixedly connected with the washing drum assembly and/or the driving device 300 and a supporting structure 900 arranged at the bottom of a casing 100. The fixed structure 800 is supported on the supporting structure 900 and configured to support the washing drum assembly and the driving device 300 inside the casing 100, and the fixed structure 800 and the supporting structure 900 cooperate with each other, such that the supporting structure 900 provides supporting forces in multiple directions for the fixed structure 800.

Solution 1, a washing drum assembly includes an inner drum 200 and an outer drum arranged outside the inner drum 200, and a fixed structure 800 is fixedly connected with the outer drum and/or a driving device 300.

Solution 2, a washing drum assembly includes an inner drum 200, the inner drum 200 is a water holding drum, no outer drum is arranged outside the inner drum 200, a fixed structure 800 is fixedly connected with a driving device 300, and the driving device 300 is connected with a bottom wall of the inner drum 200 to drive rotation of the inner drum 200, therefore, the fixed structure 800 forms an entirety with the driving device 300 and the inner drum 200.

The following embodiments are explained with a washing machine which is only provided with an inner drum 200 and provided with no outer drum outside an inner drum.

When the washing machine executing washing, the center of gravity of an inner drum shifts due to nonuniform distribution of clothes, thereby easily causing shaking of an inner drum 200, and generating noise. To reduce noise, a supporting damping piece 700 or a suspension damping piece is generally arranged inside a casing 100 to achieve an effect of damping. The damping piece 700 is generally arranged around an inner drum 200 for a round to realize support in all directions, however, due to high cost of the damping piece 700, the number of set damping pieces is limited, then no damping effect is played or the damping supporting effect is small in some directions.

Through the setting of a fixed structure 800 and a supporting structure 900, the fixed structure 800 and the supporting structure 900 cooperate with each other, such that the supporting structure 900 provides supporting forces in multiple directions for the fixed structure 800. When the center of gravity of an inner drum 200 shifts, if no supporting piece 805 or no suspension damping piece is available to support in this direction, then a supporting force provided by the supporting structure 900 can reduce shift and shaking of the inner drum 200, thereby achieving a favorable damping effect, and reducing vibration of the inner drum 200 and the driving device 300. The inner drum 200 and the driving device 300 are supported within a casing 100 through a fixed structure 800 and a supporting structure 900, then the inner drum 200 and the driving device 300 can be suspended without a suspension damping piece, and no suspension damping piece occupies the space between an inner drum 200 and a casing 100, thereby being beneficial for enlarging diameter of an inner drum 200 and providing a possibility for expanding capacity of a washing machine.

Further, the supporting structure 900 is provided with a supporting portion 901 for supporting the fixed structure 800, the fixed structure 800 is provided with a matching portion 801 which is in match with the supporting portion 901. The supporting portion 901 and the matching portion 801 are both provided with multiple side faces facing different directions, and when the center of gravity of an inner drum 200 shifts, the supporting portion 901 and the matching portion 801 cooperate with each other to provide a supporting force vertical to the side face for the fixed structure 800.

The above supporting structure supporting the fixed structure means that, since a fixed structure is fixed to be an entirety with an inner drum and a driving device, the supporting of a supporting structure to a fixed structure is in essence a support of a supporting structure to an entirety formed by a fixed structure and an inner drum and a driving device fixedly connected with the fixed structure, and the inner drum and the driving device are supported inside a casing.

The supporting structure 900 is provided with a supporting portion 901, a fixed structure 800 is supported on the supporting structure 900 through the matching between the supporting portion 901 and the matching portion 801, the supporting portion 901 is provided with multiple side faces which face towards different directions, the matching portion 801 is provided with multiple side faces which are in match with the supporting portion 901. When the center of the gravity of an inner drum 200 shifting, the supporting portion 901 provides a supporting force vertical to the side face for the fixed structure 800, thereby realizing multi-direction support of the supporting portion 901 to the fixed structure 800.

Further, the supporting portion 901 and the matching portion 801 are both provided with a cambered surface, since the cambered surface has multiple side faces, the cambered surface of the supporting portion 901 and the cambered surface of the matching portion 801 cooperate with each other, and when the center of gravity of an inner drum 200 shifts, the supporting portion 901 provides a supporting force vertical to the cambered surface for the fixed structure 800. Each point on a cambered surface corresponds to one direction, when the center of gravity of the inner drum 200 shifts, the directions in which supporting forces can be provided are more, and the supporting effect is better.

Further, the cambered surfaces of the supporting portion 901 and the matching portion 801 are both spherical surfaces, and the spherical surface of the supporting portion 901 and the spherical surface of the matching portion 801 cooperate with each other, such that the supporting structure provides a supporting force vertical to the spherical surface for the fixed structure.

Since a spherical surface is more smooth and is a symmetrical figure, the support to a fixed structure 800, an inner drum 200 and a driving device 300 is easily balanced, moreover, the spherical surface is a central symmetrical figure, even in a vibration and shaking process, a twisting force generated by an inner drum 200 and a driving device 300 can also be absorbed, thereby reducing twisting damage of the inner drum 200 and the driving device 300. The inner drum 200 and the driving device 300 are supported on a supporting structure 900 through a fixed structure 800, such that an inner drum 200 and a driving device 300 are both not in direct contact with the supporting structure 900, thereby reducing damage of an inner drum and/or a driving device caused by vibration or shaking, moreover, a fixed structure 800 can also play a certain buffering effect during vibration or shaking, thereby reducing vibration.

Further, the supporting portion 901 is a projection 802 arranged on a supporting structure 900, the matching portion 801 is a groove 902 arranged on a fixed structure 800 and matched with the supporting portion 901.

Or, the supporting portion 901 is a groove 902 arranged on a supporting structure 900, the matching portion 801 is a projection 802 arranged on a fixed structure 800 and matched with the supporting portion 901.

The surface of the projection 802 is an outer cambered surface, an inner wall of the groove 902 is an inner cambered surface, and the outer cambered surface of the projection 802 is in contact and

The outer cambered surface of the projection 802 is in contact with the inner cambered surface of the groove 902, when the center of gravity of the inner drum 200 shifts, the cambered surface provides a direct supporting force vertical to the cambered surface for the fixed structure 800, thereby preventing further shaking of the inner drum and the driving device.

Further, the surface of the projection 802 is an outer spherical surface, the inner wall of the groove 902 is an inner spherical surface, and the outer spherical surface of the projection 802 cooperates with the inner spherical surface of the groove 902 to provide a supporting force vertical to the spherical surface for the fixed structure 800.

Optimally, the inner drum 200 and the driving device 300 are co-axial, and centers of spherical surfaces of the projection 802 and the groove 902 are both arranged on a central axis of the inner drum 200.

Further, the supporting structure 900 is provided with a supporting plate 903 which supports the fixed structure 800, the supporting plate 903 is horizontally arranged, the fixed structure 800 is provided with a fixed plate 803 which is opposite to the supporting plate 903. The groove 902/projection 802 is respectively arranged on a supporting plate 903 and a fixed plate 803, and the projection 802 and the fixed plate 803 or the supporting plate 903 are molded in one body or are connected in a detachable manner.

A supporting plate 903 is arranged on an upper part of the supporting structure 900, a fixed plate 803 opposite to the supporting plate 903 is arranged on a lower part of the fixed structure 800, the supporting plate 903 is connected with the fixed plate 803 through a groove 902 and a projection 802, that is, the projection 802 is inserted into the groove 902 and a contact surface between the two is a spherical surface. When the center of gravity of the inner drum 200 shifting, a supporting force vertical to the spherical surface is generated on the spherical surface, such that the inner drum 200 and the driving device are balanced.

The fixed plate 803 and the supporting plate 903 are set oppositely, so as to better provide a supporting force, optimally, the projection 802 and the groove 902 are arranged on a central axis of the inner drum 200, such that the overall structure is more symmetrical and are easily balanced.

Solution 1, the fixed plate 803 is arranged above the supporting plate 903, part of the supporting plate 903 protrudes upwards to form an outer spherical projection 802, part of the fixed plate 803 is concave upwards to form an inner spherical groove 902, both the outer sphere and the inner sphere are hemispheres and the sphere diameters are the same. The projection 802 is supported in the groove 902, the outer spherical surface of the projection 802 is fit to the inner spherical surface of the groove 902, and when shaking of the inner drum 200 and the driving device 300 drives the fixed structure to shake, due to the matching between the spherical surface of the projection and the spherical surface of the groove, the projection 802 provides a supporting force vertical to an outer spherical surface of the projection for the fixed structure 800.

Solution 2, the fixed plate 803 is arranged above the supporting plate 903, the fixed plate 803 protrudes downwards to form a spherical projection 802, the supporting plate 903 is concave downwards to form a groove 902, the inner wall of the groove 902 is spherical surface, the projection 802 is supported in the groove 902, the outer spherical surface of the projection 802 is fit to the inner spherical surface of the groove 902, and when the inner drum 200 shakes, the groove 802 of the supporting plate 903 provides a supporting force vertical to an inner spherical surface of the groove for the fixed structure 800.

The fixed structure 800 is provided with an accommodation space, the driving device 300 is arranged in the accommodation space, and is fixedly connected with the fixed structure 800. Through the setting of an accommodation space, the fixed structure 800 not only can fix and support the inner drum 200 and the driving device 300, but also can protect the driving device 300.

Further, the fixed structure 800 further includes a mounting plate 500 and a supporting piece 805, two ends of the supporting piece 805 are respectively connected with the mounting plate 500 and the fixed plate 803, such that the mounting plate 500 and the fixed plate 803 are spaced apart to form an accommodation space, and the driving device 300 is arranged in the accommodation space and is fixed on a lower part of the mounting plate 500. The driving device 300 penetrates through the mounting plate 500 and is connected with the inner drum, and drives the inner drum to rotate. The mounting plate 500 and the fixed plate 803 are spaced apart by the supporting piece 805, to form an accommodation space which can accommodate the driving device 300, the driving device 300 is encircled in the accommodation space, and the fixed structure 800 has a certain protective effect on the driving device 300.

Solution 1, the supporting piece 805 is a supporting column 805-1, an upper end of the supporting column 805-1 is fixedly connected with the mounting plate 500, and a lower end is connected with a fixed plate 803, such that the mounting plate 500 and the fixed plate 803 are spaced apart to form an accommodation space. The supporting columns are multiple, and are optimally more than 4, and multiple supporting columns are distributed uniformly around a mounting plate.

The supporting column 805-1, the fixed plate 803 and the mounting plate 500 encircle the driving device 300 inside an accommodation space, thereby playing a certain protective effect on the driving device 300. Meanwhile, when a washing machine is maintained and replaced, a fixed structure 800 further has a supporting effect, thereby facilitating checking, maintenance and replacement of a driving device 300.

Solution 2, the supporting piece 805 is a barrel-shaped side wall 805-2 which is formed through upward extension of an edge of a fixed plate 803, the barrel-shaped side wall 805-2 and the fixed plate 803 enclose into a concave cavity 806 with an upward opening, the driving device 300 is arranged in the concave cavity 806, and the mounting plate 500 is fixedly connected with an edge of an opening of the concave cavity 806.

Optimally, the mounting plate 500 and the edge of an opening of the concave cavity 806 can be detachably connected, and can be connected through a screw or can be clamped.

In the structure, a concave space 807 is designed to be an enclosed concave cavity 806, thereby realizing a favorable waterproof effect. Since an inner drum 200 is a water holding drum, no outer drum is arranged outside the inner drum, if water inside an inner drum 200 overflows, a driving device 300 is easily damaged. When the concave space is designed to be an enclosed structure, overflow water is not easily in contact with the driving device 300, thereby better protecting the driving device 300.

Further, the washing machine further includes a damping piece 700, wherein one end of the damping piece 700 is fixedly connected with a mounting plate 500, and the other end is connected with the supporting structure 900.

Through the setting of a damping piece 700 and by utilizing a buffering effect of the damping piece 700, vibration of an inner drum 200 is further reduced, and a spherical projection 802 is also protected to some extent.

A damping piece 700 can be a damping spring, a damper, a seat spring, a hydraulic cylinder and other parts which can play a buffer action. As shown in FIG. 1, the damping piece is a damping spring, and as shown in FIG. 3, the damping piece is a damper.

Further, an upper end of the damping piece 700 is fixedly connected with the mounting plate 500, and a lower end is fixedly connected with the supporting plate 903.

The supporting plate 903 is optimally a supporting flat plate, and an edge of a supporting flat plate is fit to an inner wall of the casing 100. Due to an influence of the material of the casing 100, if the damping piece 700 is directly installed with the casing 100, the supporting plate 903 may be easily damaged under the effect of a pulling force, since the supporting plate has a small area, materials with a higher tensile strength and different from those of a casing can be adopted, thereby prolonging service life of a supporting plate 903, meanwhile, the structure is simple, the cost is low, and the tensile property is favorable.

Embodiment 2

As shown in FIGS. 1-4, on the basis of embodiment 1, in the present embodiment, a water-retaining structure for preventing overflow of water discharged from an inner drum 200 is arranged on a fixed structure, the water-retaining structure is wholly arranged on a lower part of the drum bottom of the inner drum 200, and the inner drum 200 has a water holding function.

Specifically speaking, a water-retaining structure is arranged on an upper part of a mounting plate 500.

Through the setting of a water-retaining structure, on the one hand, when water is discharged from an inner drum 200, water is blocked through a water-retaining structure, so as to prevent overflow of water, on the other hand, since a water-retaining structure is entirely arranged below an inner drum 200, the water-retaining structure is not provided with part of the structures between a side wall of an inner drum 200 and a casing 100, and has no limiting effect on capacity expansion of the inner drum 200, thereby providing a sufficient space for capacity expansion of an inner drum 200.

The water-retaining structure includes a water collecting chamber 400 which has an upward opening, an upper end of a side wall of the water collecting chamber 400 is lower than the drum bottom of the inner drum 200, and the inner drum 200 is communicated with the upward opening of the water collecting chamber 400.

The water collecting chamber 400 is arranged to block water discharged from an inner drum 200. Since an upper end of a side wall of a water collecting chamber 400 is lower than the drum bottom of an inner drum 200, the water collecting chamber 400 is entirely arranged below the drum bottom of a washing drum assembly. For a washing machine which is only provided with an inner drum, the water collecting chamber 400 is entirely arranged below a drum bottom of an inner drum, then a side wall of the water collecting chamber 400 has no structure between an inner drum 200 and a casing 100, and no certain safety distance needs to be set between the inner drum 200 and the water-retaining structure, thereby preventing damage caused by collision between an inner drum 200 and a water-retaining structure. And no safety distance needs to be set between a water-retaining structure and a casing 100, therefore, only a safety distance between an inner drum 200 and a casing 100 needs to be designed, thereby greatly increasing diameter of an inner drum 200 and better expanding capacity of an inner drum 200.

A side wall of the water collecting chamber 400 and an outer wall of the drum bottom of the inner drum 200 are spaced apart.

An upper end of a side wall of a water collecting chamber 400 is lower than a drum bottom of an inner drum 200, and a side wall of a water collecting chamber 400 and an outer wall of a drum bottom of an inner drum 200 are spaced apart, thereby preventing collision between an inner drum and a side wall of a water collecting chamber 400 during vibration of an inner drum, and prolonging service life of a water collecting chamber 400.

The water collecting chamber 400 is provided with a water drainage pipe 401 configured to discharge water from a water-retaining structure, and the water drainage pipe 401 extends out of the washing machine.

The inner drum 200 includes a first water drainage outlet 201 configured to discharge water during spin-drying and a first water drainage pipe 202 communicated with the first water drainage outlet 201, and a water outlet 203 of the first water drainage pipe 202 is communicated with a water-retaining structure. Water inside an inner drum is discharged into a water-retaining structure through the first water drainage pipe 202 communicated with the first water drainage outlet 201, and is discharged through a water drainage pipe 401.

Embodiment 3

As shown in FIGS. 1-4, the present embodiment further defines embodiment 2. In the present embodiment, the mounting plate 500 is provided with a water retaining rib 501, and the mounting plate 500 and the water retaining rib 501 enclose to form a water collecting chamber 400. Through the setting of a mounting plate 500 and a water retaining rib 501 and through enclosing the two to form a water collecting chamber 400, the structure is simple, and processing and molding are facilitated.

The water collecting chamber 400 is arranged in the middle of the mounting plate 500, such that the center of gravity of the water retaining device is easier to coincide with the center, thereby reducing shift.

The water retaining rib 501 is annular, and the water retaining rib 501 and the mounting plate 500 enclose to form an annular water collecting chamber 400.

Further, the water retaining rib 501 is set to be inclined, and when the water retaining rib 501 is set to be inclined, the retained water can be increased to the greatest extent, thereby being more beneficial for use;

Further, the water retaining rib 501 gradually contracts from top to bottom towards the direction of a central axis of a water collecting chamber 400, thereby enabling an aperture of an upper opening to be bigger, and facilitating collection.

Further, an outer wall of a bottom part of the inner drum 200 is a cambered surface, and the cambered surface of the water retaining rib 501 and the cambered surface of the inner drum 200 are spaced apart for a certain distance.

Further, a projection of the inner drum 200 in a horizontal direction covers a projection of the water collecting chamber 400 in a horizontal direction. The projection of the inner drum 200 in a horizontal direction covers the projection of the water collecting chamber 400 in a horizontal direction, thereby increasing the space between the water collecting chamber 400 and the casing 100, preventing collision of the water collecting chamber 400 on the casing 100, and reducing damage to the water collecting chamber 400; meanwhile, the water collecting chamber 400 is small, thereby being more convenient for installing other devices at the bottom of the casing 100.

A projection of the inner drum 200 in a horizontal direction can be smaller than a projection of the water collecting chamber 400 in a horizontal direction, thereby being capable of collecting more water.

Further, the mounting plate 500 is provided with a water drainage pipe 401, one end of the water drainage pipe 401 is communicated with a water collecting chamber 400, and the other end goes out of the washing machine or is communicated with an overall water drainage pipe of the washing machine to discharge water. Through the setting of a water drainage pipe 401 which is configured to discharge water inside a water-retaining structure inside a water collecting chamber 400, after water is discharged into the water collecting chamber 400, water inside the water collecting chamber 400 is discharged through a water drainage pipe 401, thereby preventing overflow of excessive water inside the water collecting chamber 400.

Further, a drum wall of an inner drum 200 is provided with a first water drainage outlet 201 and a first water drainage pipe 202 communicated with the first water drainage outlet 201, and a water outlet 203 of the first water drainage pipe 202 is arranged above an upper opening of the water collecting chamber 400. Multiple first water drainage outlets 201 and multiple first water drainage pipes 202 are available, each first water drainage outlet 201 respectively corresponds to a first water drainage pipe 202, and multiple first water drainage outlets 201 correspond to a first water drainage pipe 202. When a washing machine performs a spin-drying procedure, water drained out due to a centrifugal effect of an inner drum enters a first water drainage pipe 202 through a first water drainage outlet 201, and is discharged into the water collecting chamber 400 through the water outlet 203 of the first water drainage pipe 202, thereby blocking overflow of water in all directions.

A water outlet 203 of the first water drainage pipe 202 is arranged above an upper opening of the water collecting chamber 400. Through the communication between the water outlet 203 and the water-retaining structure, during spin-drying, water enters the first water drainage pipe 202 through the first water outlet 203 and is discharged and enters the water collecting chamber 400 through the water outlet 203, thereby blocking overflow of water. The water outlet 203 is arranged above the upward opening of a water collecting chamber 400 which is enclosed by a water retaining rib 501, and water discharged from a water outlet 203 directly falls into the water collecting chamber 400, therefore, the structure is simpler, no other additional parts need to be added, and the water collecting result is better.

Further, the inner drum 200 further includes a second water drainage outlet 204 configured to discharge water inside an inner drum 200 into a water collecting chamber 400 during dehydration and/or spin-drying, a blocking device 205 is arranged between the second water drainage outlet 204 and the water collecting chamber 400. The blocking device 205 opens the second water drainage outlet 204 during dehydration and/or spin-drying, a large amount of water inside the inner drum 200 is discharged through the second water drainage outlet 204, and when washing, the second water drainage outlet 204 is blocked, and water is retained in the inner drum 200 to wash clothes.

Further, the second water drainage outlet 204 is arranged above the upward opening of the water collecting chamber 400, and the blocking device 205 is arranged on a lower part of the second water drainage outlet 204.

Through the arrangement of the second water drainage outlet 204, during dehydration and/or spin-drying, the blocking device 205 opens the second water drainage outlet 204, water inside an inner drum 200 is directly drained into the water-retaining structure. The water retaining rib 501 blocks water and prevents overflow of water, and water is discharged out of a washing machine through a water drainage pipe 401. When washing, the blocking device 205 blocks the second water drainage outlet 204, and water inside the inner drum 200 is retained inside an inner drum 200 to wash clothes.

The washing machine is an impeller-type washing machine.

The blocking device 205 includes a valve plug 205-1 and an electromagnetic device 205-2 arranged below the valve plug 205-1, and the electromagnetic device 205-2 is electrically connected with a control device of a washing machine. When the washing machine is in a clothes washing state, the valve plug 205-1 blocks the second water drainage outlet 204 to prevent discharge of water inside an inner drum 200. When a washing machine is in a drainage or dehydration state, the electromagnetic device 205-2 controls the valve plug 205-1 to move downwards, such that the second water drainage outlet 204 is opened to discharge water into a water-retaining structure.

A positioning device is arranged on the mounting plate 500, a bottom wall of the inner drum 200 is provided with a matching portion which is in match with the positioning device, and the matching portion can be a positioning groove. During dehydrating and/or spin-drying, the positioning device is separated from the matching portion, and the inner drum 200 rotates along with an output shaft 303. When the washing machine is in a clothes washing state, the positioning device is in match with the matching portion to clamp the inner drum 200 on the mounting plate 500, the valve plug 205-1 is just opposite to the second water drainage outlet 204, the second water drainage outlet 204 is blocked to prevent discharge of water in the inner drum 200, and the output shaft drives an impeller in the washing machine to rotate.

Further, the mounting plate 500 is arranged between the inner drum 200 and the driving device 300, and a lower part of the mounting plate 500 is fixedly connected with a casing of the driving device 300. Through setting a mounting plate 500 between the inner drum 200 and the driving device 300, on the one hand, water in the inner drum 200 can fall by relying on its self weight and automatically flow into the water-retaining structure, on the other hand, the mounting plate 500 is arranged on an upper part of a driving device 300, then water is isolated from the driving device 300, thereby preventing damage to the driving device 300 caused by water.

The driving device 300 includes a motor 301, a decelerating clutch device 302 is arranged above the motor 301, and a lower part of the mounting plate 500 is fixedly connected with the decelerating clutch or the casing of the motor 301.

The mounting plate 500 and the driving device 300 can also be connected in the following manner: the mounting plate 500 is connected with an output shaft 303 of the driving device 300 through a bearing.

Further, an output shaft 303 of the decelerating clutch penetrates through the mounting plate 500 and is connected with an inner drum 200 to drive rotation of the inner drum 200, and the mounting plate 500 is connected with an output shaft 303 of the driving device 300 through a bearing.

What is described above is merely the preferred embodiments of the present disclosure, rather than limiting the present disclosure in any form, although the present disclosure has been disclosed above with the preferred embodiments, the preferred embodiments are not used for limiting the present disclosure, those skilled in the art can make some changes or modify into equivalent embodiments with equal changes by utilizing the above suggested technical contents without departing from the scope of the technical solution of the present disclosure, and the contents not departing from the technical solution of the present disclosure, any simple amendments, equivalent changes or modifications made to the above embodiments based on the technical essence of the present disclosure shall all fall within the scope of the solution of the present disclosure. 

1. A washing machine, comprising a casing, a washing drum assembly arranged inside the casing, a driving device arranged under the washing drum assembly, a fixed structure fixedly connected with the washing drum assembly and/or the driving device, and a supporting structure arranged at a bottom of the casing, wherein: the fixed structure is supported on the supporting structure and configured to support the washing drum assembly and the driving device inside the casing, and the fixed structure and the supporting structure cooperate with each other to enable the supporting structure to provide supporting forces in multiple directions for the fixed structure.
 2. The washing machine according to claim 1, wherein: the supporting structure is provided with a supporting portion for supporting the fixed structure, the fixed structure is provided with a matching portion which is in match with the supporting portion, and the supporting portion and the matching portion are both provided with multiple side faces facing different directions, and when a center of gravity of the washing drum assembly shifts, the supporting portion and the matching portion cooperate with each other to provide supporting forces vertical to each of the side faces for the fixed structure.
 3. The washing machine according to claim 2, wherein: the supporting portion and the matching portion are both provided with a cambered surface, the cambered surface of the supporting portion and the cambered surface of the matching portion cooperate with each other, and when the center of gravity of the washing drum assembly shifts, the supporting portion provides a supporting force vertical to the cambered surface for the fixed structure.
 4. The washing machine according to claim 2, wherein: the supporting portion is a projection arranged on the supporting structure and the matching portion is a groove arranged on the fixed structure and matched with the supporting portion, or the supporting portion is a groove arranged on the supporting structure and the matching portion is a projection arranged on the fixed structure and matched with the supporting position, the cambered surface of the projection is an outer cambered surface, an inner wall of the groove is an inner cambered surface, and the outer cambered surface of the projection is in contact and cooperation with the inner cambered surface of the groove.
 5. The washing machine according to claim 4, wherein: the supporting structure is provided with a supporting plate for supporting the fixed structure, the fixed structure is provided with a fixed plate which is opposite to the supporting plate, the groove is arranged on the supporting plate and the projection is arranged on the fixed plate, or the projection is arranged on the supporting plate and the groove is arranged on the fixed plate, and the projection and the fixed plate or the supporting plate are molded in one body or are connected in a detachable manner.
 6. The washing machine according to claim 5, wherein: the fixed plate is arranged above the supporting plate, the supporting plate protrudes upwards to form the projection with the outer spherical surface, and the fixed plate is concave upwards to form the groove with the inner spherical surface, or, the fixed plate protrudes downwards to form the projection with the outer spherical surface, and the supporting plate is concave downwards to form the groove with the inner spherical surface.
 7. The washing machine according to claim 1, wherein: the fixed structure is provided with an accommodation space, and the driving device is arranged in the accommodation space and is fixedly connected with the fixed structure.
 8. The washing machine according to claim 1, wherein: the fixed structure further comprises a mounting plate and a supporting piece, two ends of the supporting piece are respectively connected with the mounting plate and the fixed plate, the mounting plate and the fixed plate are spaced apart to form the accommodation space, and the driving device is arranged in the accommodation space and is fixed on a lower part of the mounting plate.
 9. The washing machine according to claim 8, wherein: the supporting piece is a supporting column, an upper end of the supporting column is fixedly connected with the mounting plate, and a lower end of the supporting column is connected with the fixed plate, and the mounting plate and the fixed plate are spaced apart to form the accommodation space; or, the supporting piece is a barrel-shaped side wall which is formed through upward extension of an edge of the fixed plate, the barrel-shaped side wall and the fixed plate enclose into a concave cavity with an upward opening, the driving device is arranged in the concave cavity, and the mounting plate is fixedly connected with an edge of the opening of the concave cavity.
 10. The washing machine according to claim 1, further comprising a damping piece, wherein: one end of the damping piece is fixedly connected with the mounting plate, and another end of the damping piece is connected with the supporting structure.
 11. The washing machine according to claim 3, wherein: the cambered surfaces of the supporting portion and the matching portion are both spherical surfaces, and the spherical surface of the supporting portion and the spherical surface of the matching portion cooperate with each other.
 12. The washing machine according to claim 4, wherein: the cambered surface of the projection is an outer spherical surface, the inner wall of the groove is an inner spherical surface, and the outer spherical surface of the projection is in match with the inner spherical surface of the groove to provide a supporting force vertical to the spherical surface for the fixed structure.
 13. The washing machine according to claim 3, wherein: the supporting portion is a projection arranged on the supporting structure and the matching portion is a groove arranged on the fixed structure and matched with the supporting portion, or the supporting portion is a groove arranged on the supporting structure and the matching portion is a projection arranged on the fixed structure and matched with the supporting portion, the cambered surface of the projection is an outer cambered surface, an inner wall of the groove is an inner cambered surface, and the outer cambered surface of the projection is in contact and cooperation with the inner cambered surface of the groove.
 14. The washing machine according to claim 10, wherein: an upper end of the damping piece is fixedly connected with the mounting plate, and a lower end of the damping piece is fixedly connected with the supporting plate.
 15. The washing machine according to claim 2, wherein: the fixed structure further comprises a mounting plate and a supporting piece, two ends of the supporting piece are respectively connected with the mounting plate and the fixed plate, the mounting plate and the fixed plate are spaced apart to form the accommodation space, and the driving device is arranged in the accommodation space and is fixed on a lower part of the mounting plate.
 16. The washing machine according to claim 3, wherein: the fixed structure further comprises a mounting plate and a supporting piece, two ends of the supporting piece are respectively connected with the mounting plate and the fixed plate, the mounting plate and the fixed plate are spaced apart to form the accommodation space, and the driving device is arranged in the accommodation space and is fixed on a lower part of the mounting plate. 